[HDFS-5004] Add additional JMX bean for NameNode status data

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.1.0-beta, 2.0.4-alpha, 3.0.0-alpha1
• Fix Version/s: 2.3.0
• Component/s: namenode
• Assignee: Trevor Lorimer
• Reporter: Trevor Lorimer
• Created: 17/Jul/13 16:13
• Updated: 12/May/16 18:17
• Resolved: 27/Jul/13 00:18

Description

Currently the JMX beans returns much of the data contained on the HDFS Health webpage (dfsHealth.html). However there are several other attributes that are required to be added, that can only be accessed from within NameNode.

For this reason a new JMX bean is required (NameNodeStatusMXBean) which will expose the following attributes in NameNode:
Role
State
HostAndPort

also a list of the corruptedFiles should be exposed by NameNodeMXBean.

Issue Links

• is related to: HADOOP-9562 Create REST interface for HDFS health data